Atmel's SAM4SP32A is a new compact, highly integrated solution that combines a Cortex-M4 processor-based MCU, 2MB of dual-bank Flash, 160KB SRAM and a high-performance PLC transceiver in a single-chip SoC that lowers overall system costs.

In order to support the complex protocol required by smart meters to make firmware upgrades of the application and the protocol stack independently in the field, the new SoC integrates Atmel's PLC technology with a high-performance Cortex-M4 MCU with 2MB of program memory on a dual-bank configuration. The new solution also leverages the powerful peripherals of the Cortex-M4 MCU, including serial peripheral interface (SPI), TWI and USARTS, to support